Here is a Designed by Arnold Brilhart Hard Rubber Great Neck alto saxophone mouthpiece. It is not stamped with a facing number.
060 on the digital tip gauge. It appears to be original.I had a tenor from the same era that had similar finishing work. The tip and rails are excellent and it plays very nicely for this small of a tip. It still has a nice resistance to it. The sound is dark, mellow, and sweet.
I would also describe it as complex. The item "Designed by Arnold Brilhart Hard Rubber Great Neck alto saxophone mouthpiece" is in sale since Wednesday, April 10, 2019. This item is in the category "Musical Instruments & Gear\Wind & Woodwind\Parts & Accessories\Mouthpieces". The seller is "lfandwhenwerise" and is located in Philadelphia, Pennsylvania. This item can be shipped worldwide.